2

Not directly:
The message, not the messenger, is more likely to affect your brain function. Power emission of cell phones is so low that alteration of brain electrical activity will not occur. Despite media concern, many studies have failed to conclusively document increase of brain tumors in cell phone users. The content of the phone call will affect your brain activity much more strongly than the phone.
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9

Not that way:
EEG tracings in coma depending upon the cause, may show diffuse slowing or even relatively waking recordings (in some brainstem strokes). Very useful in also ruling out seizure activity as a cause for decreased responsivity.
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10

Mild disorganization:
There have been attempts to understand brain development with EEG for many years. 30 years ago they tried BEAM (brain electrical activity mapping) to diagnose ADHD, dyslexia, etc. we are still in the dark. Receptive language develops better than expressive language in many, especially boys. This can cause difficulty forming words (dyspraxia) as well as stuttering and frustration. Time will help.
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